Add decoration for link

README.md

@@ -28,4 +28,19 @@ Integrates [Org](https://orgmode.org) into VS Code.
 | Head Level   | Maximum head level                             | 6         |
 | Update Delay | Update UI delay for indent and fold in ms      | 10        |
 | Indent       | Indent heads                                   | true      |
-| Fold         | Fold by heads                                  | true      |
+| Fold         | Fold by heads                                  | true      |
+
+## Fetures
+- [x] Highlight for Org syntax
+- [x] Hide leading stars
+- [x] Start up indented
+- [x] Promotion or demotion for a haed or a tree of head
+- [x] Set a state
+- [x] Calculate the state of children
+- [x] Configure for a state
+- [x] Insert schedule or deadline date
+- [x] Folding source block
+- [ ] Handling a link
+- [ ] Start up folded
+- [ ] Inline image
+- [ ] Highlight for source syntax

src/decoration.ts

@@ -12,6 +12,9 @@ export class Decoration implements vscode.Disposable {
 	private doneState: string;
 	private todoType: vscode.TextEditorDecorationType;
 	private doneType: vscode.TextEditorDecorationType;
+	private descRegex: RegExp;
+	private linkType: vscode.TextEditorDecorationType;
+	private hideType: vscode.TextEditorDecorationType;
 
 	constructor(parser: Parser) {
 		this.config = Config.getInstance();
@@ -67,6 +70,27 @@ export class Decoration implements vscode.Disposable {
 				'color': 'rgba(0, 255, 0, 1.0)'
 			}
 		});
+
+		// links
+		this.descRegex = new RegExp('\\]\\[', 'g');
+		this.linkType = vscode.window.createTextEditorDecorationType({
+			'light': {
+				'color': 'rgba(0, 128, 255, 1.0)'
+			},
+			'dark': {
+				'color': 'rgba(0, 128, 255, 1.0)'
+			}
+		});
+		this.hideType = vscode.window.createTextEditorDecorationType({
+			'light': {
+				'color': 'rgba(0, 128, 255, 0.0)',
+				'letterSpacing': '-256px'
+			},
+			'dark': {
+				'color': 'rgba(0, 128, 255, 0.0)',
+				'letterSpacing': '-256px'
+			}
+		});
 	}
 
 	dispose(): void {
@@ -129,11 +153,28 @@ export class Decoration implements vscode.Disposable {
 
 			h = h.nextHead;
 		}
+
+		// links
+		const link: vscode.Range[] = [];
+		const hide: vscode.Range[] = [];
+		for (let range of this.parser.getLinks()) {
+			const start = range.start;
+			const end = range.end;
+			const text = editor.document.getText(range);
+			const match = this.descRegex.exec(text);
+			const offset = (match) ? match.index + 2 : 2;
+			hide.push(new vscode.Range(start.line, start.character, start.line, start.character + offset))
+			hide.push(new vscode.Range(end.line, end.character - 2, end.line, end.character));
+			link.push(new vscode.Range(start.line, start.character + offset, end.line, end.character - 2));
+		}
+
 		for (i = 0; i < this.level; i++) {
 			editor.setDecorations(this.headType[i], head[i]);
 			editor.setDecorations(this.bodyType[i], body[i]);
 		}
 		editor.setDecorations(this.todoType, todo);
 		editor.setDecorations(this.doneType, done);
+		editor.setDecorations(this.linkType, link);
+		editor.setDecorations(this.hideType, hide);
 	}
 }

src/parser.ts

@@ -8,15 +8,19 @@ export class Parser implements vscode.Disposable {
 	private state: string[];
 	private headRegex: RegExp;
 	private countRegex: RegExp;
+	private linkRegex: RegExp;
 	private first: Head | undefined;
+	private links: vscode.Range[];
 
 	constructor(context: vscode.ExtensionContext) {
 		this.config = Config.getInstance();
 		this.level = this.config.get('headLevel');
 		this.state = (this.config.get('todoState') + ' ' + this.config.get('doneState')).split(' ');
 		this.headRegex = new RegExp('\\n[*]{1,' + this.level.toString() + '}\\s+|[\\s\\S]$', 'g');
 		this.countRegex = new RegExp('\\[\\d*\\/\\d*\\]', 'g');
+		this.linkRegex = new RegExp('\\[\\[[^\\n]+\\]\\]', 'g');
 		this.first = undefined;
+		this.links = [];
 	}
 
 	dispose(): void {
@@ -28,6 +32,7 @@ export class Parser implements vscode.Disposable {
 			return Promise.resolve();
 		}
 		this.first = undefined;
+		this.links = [];
 		const text = editor.document.getText();
 		let match;
 		const parent: Head[] = [];
@@ -111,6 +116,11 @@ export class Parser implements vscode.Disposable {
 				prevHead = head;
 			}
 		}
+		while (match = this.linkRegex.exec(text)) {
+			const start = editor.document.positionAt(match.index);
+			const end = editor.document.positionAt(match.index + match[0].length);
+			this.links.push(new vscode.Range(start, end));
+		}
 		return Promise.resolve();
 	}
 
@@ -129,4 +139,8 @@ export class Parser implements vscode.Disposable {
 		}
 		return h;
 	}
+
+	getLinks(): vscode.Range[] {
+		return this.links;
+	}
 }

syntaxes/org.tmLanguage.json

@@ -5,7 +5,7 @@
 		{
 			"comment": "org metadata",
 			"name": "keyword.control",
-			"match": "^#+\\S+:"
+			"match": "^#+\\S+:?"
 		},
 		{
 			"comment": "org level 1",
@@ -70,6 +70,7 @@
 				{ "include": "#done" },
 				{ "include": "#count" },
 				{ "include": "#tag" },
+				{ "include": "#link"},
 				{ "include": "#common" }
 			]
 		},
@@ -102,6 +103,10 @@
 			"name": "markup.bold",
 			"match": "(:)\\b(\\S+)\\b(:)"
 		},
+		"link": {
+			"name": "markup.underline",
+			"match": "\\[\\[[^\\n]+\\]\\]"
+		},
 		"time-prop": {
 			"name": "keyword.control",
 			"match": "\\b(SCHEDULED|DEADLINE)\\b:"